The Mouse
The mouse is used to set point, mark and the block.
- Button 1 in the grid moves point
- Button 2 in the grid inserts the current selection
- Button 3 in the grid extends the selection
- Button 1 in colnum sets block to the clicked column
- Button 3 in colnum extends the selection
- Button 1 in rownum sets block to the clicked row
- Button 3 in rownum extends the selection
Moving the mouse in the grid with button 1 pressed defines the
selection.
Mice with fewer than 3 buttons can be used by changing the app-defaults.
This behaviour is consistent with most other X applications.
The selection can be cleared directly by calling the function
(unset-block) or indirectly by selecting
something else in another part of the grid, in another instance
of Siag or in another X application.
Ulric Eriksson - October 1997 - ulric@edu.stockholm.se